// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_CDM_VIDEO_DECODER_H_
#define MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_CDM_VIDEO_DECODER_H_

#include <stdint.h>

#include <memory>

#include "media/cdm/api/content_decryption_module.h"
#include "media/cdm/ppapi/external_clear_key/clear_key_cdm_common.h"

namespace media {

class CdmVideoDecoder {
public:
    virtual ~CdmVideoDecoder() { }
    virtual bool Initialize(const cdm::VideoDecoderConfig& config) = 0;
    virtual void Deinitialize() = 0;
    virtual void Reset() = 0;
    virtual bool is_initialized() const = 0;

    // Decodes |compressed_frame|. Stores output frame in |decoded_frame| and
    // returns |cdm::kSuccess| when an output frame is available. Returns
    // |cdm::kNeedMoreData| when |compressed_frame| does not produce an output
    // frame. Returns |cdm::kDecodeError| when decoding fails.
    //
    // A null |compressed_frame| will attempt to flush the decoder of any
    // remaining frames. |compressed_frame_size| and |timestamp| are ignored.
    virtual cdm::Status DecodeFrame(const uint8_t* compressed_frame,
        int32_t compressed_frame_size,
        int64_t timestamp,
        cdm::VideoFrame* decoded_frame)
        = 0;
};

// Initializes the appropriate video decoder based on build flags and the value
// of |config.codec|. Returns a scoped_ptr containing a non-null initialized
// CdmVideoDecoder pointer upon success.
std::unique_ptr<CdmVideoDecoder> CreateVideoDecoder(
    ClearKeyCdmHost* host,
    const cdm::VideoDecoderConfig& config);

} // namespace media

#endif // MEDIA_CDM_PPAPI_EXTERNAL_CLEAR_KEY_CDM_VIDEO_DECODER_H_
